1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 1999-2021 Petko Manolov (petkan@nucleusys.com) 4 * 5 */ 6 7 #include <linux/sched.h> 8 #include <linux/slab.h> 9 #include <linux/init.h> 10 #include <linux/delay.h> 11 #include <linux/netdevice.h> 12 #include <linux/etherdevice.h> 13 #include <linux/ethtool.h> 14 #include <linux/mii.h> 15 #include <linux/usb.h> 16 #include <linux/module.h> 17 #include <asm/byteorder.h> 18 #include <linux/uaccess.h> 19 #include "pegasus.h" 20 21 #define DRIVER_AUTHOR "Petko Manolov <petkan@nucleusys.com>" 22 #define DRIVER_DESC "Pegasus/Pegasus II USB Ethernet driver" 23 24 static const char driver_name[] = "pegasus"; 25 26 #undef PEGASUS_WRITE_EEPROM 27 #define BMSR_MEDIA (BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | \ 28 BMSR_100FULL | BMSR_ANEGCAPABLE) 29 #define CARRIER_CHECK_DELAY (2 * HZ) 30 31 /* 32 * USB endpoints. 33 */ 34 35 enum pegasus_usb_ep { 36 PEGASUS_USB_EP_CONTROL = 0, 37 PEGASUS_USB_EP_BULK_IN = 1, 38 PEGASUS_USB_EP_BULK_OUT = 2, 39 PEGASUS_USB_EP_INT_IN = 3, 40 }; 41 42 static bool loopback; 43 static bool mii_mode; 44 static char *devid; 45 46 static struct usb_eth_dev dynamic_id_info = {}; 47 48 static struct usb_device_id pegasus_ids[] = { 49 #define PEGASUS_DEV(pn, vid, pid, flags) \ 50 {.match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = vid, .idProduct = pid, \ 51 .driver_info = (kernel_ulong_t)&(const struct usb_eth_dev) {.name = pn, .private = flags}}, 52 /* 53 * The Belkin F8T012xx1 bluetooth adaptor has the same vendor and product 54 * IDs as the Belkin F5D5050, so we need to teach the pegasus driver to 55 * ignore adaptors belonging to the "Wireless" class 0xE0. For this one 56 * case anyway, seeing as the pegasus is for "Wired" adaptors. 57 */ 58 #define PEGASUS_DEV_CLASS(pn, vid, pid, dclass, flags) \ 59 {.match_flags = (USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_DEV_CLASS), \ 60 .idVendor = vid, .idProduct = pid, .bDeviceClass = dclass, \ 61 .driver_info = (kernel_ulong_t)&(const struct usb_eth_dev) {.name = pn, .private = flags}}, 62 #include "pegasus.h" 63 #undef PEGASUS_DEV 64 #undef PEGASUS_DEV_CLASS 65 {}, 66 {} 67 }; 68 69 MODULE_AUTHOR(DRIVER_AUTHOR); 70 MODULE_DESCRIPTION(DRIVER_DESC); 71 MODULE_LICENSE("GPL"); 72 module_param(loopback, bool, 0); 73 module_param(mii_mode, bool, 0); 74 module_param(devid, charp, 0); 75 MODULE_PARM_DESC(loopback, "Enable MAC loopback mode (bit 0)"); 76 MODULE_PARM_DESC(mii_mode, "Enable HomePNA mode (bit 0),default=MII mode = 0"); 77 MODULE_PARM_DESC(devid, "The format is: 'DEV_name:VendorID:DeviceID:Flags'"); 78 79 /* use ethtool to change the level for any given device */ 80 static int msg_level = -1; 81 module_param(msg_level, int, 0); 82 MODULE_PARM_DESC(msg_level, "Override default message level"); 83 84 MODULE_DEVICE_TABLE(usb, pegasus_ids); 85 static const struct net_device_ops pegasus_netdev_ops; 86 87 /*****/ 88 89 static void async_ctrl_callback(struct urb *urb) 90 { 91 struct usb_ctrlrequest *req = (struct usb_ctrlrequest *)urb->context; 92 int status = urb->status; 93 94 if (status < 0) 95 dev_dbg(&urb->dev->dev, "%s failed with %d", __func__, status); 96 kfree(req); 97 usb_free_urb(urb); 98 } 99 100 static int get_registers(pegasus_t *pegasus, __u16 indx, __u16 size, void *data) 101 { 102 return usb_control_msg_recv(pegasus->usb, 0, PEGASUS_REQ_GET_REGS, 103 PEGASUS_REQT_READ, 0, indx, data, size, 104 1000, GFP_NOIO); 105 } 106 107 static int set_registers(pegasus_t *pegasus, __u16 indx, __u16 size, 108 const void *data) 109 { 110 int ret; 111 112 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REGS, 113 PEGASUS_REQT_WRITE, 0, indx, data, size, 114 1000, GFP_NOIO); 115 if (ret < 0) 116 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret); 117 118 return ret; 119 } 120 121 /* 122 * There is only one way to write to a single ADM8511 register and this is via 123 * specific control request. 'data' is ignored by the device, but it is here to 124 * not break the API. 125 */ 126 static int set_register(pegasus_t *pegasus, __u16 indx, __u8 data) 127 { 128 void *buf = &data; 129 int ret; 130 131 ret = usb_control_msg_send(pegasus->usb, 0, PEGASUS_REQ_SET_REG, 132 PEGASUS_REQT_WRITE, data, indx, buf, 1, 133 1000, GFP_NOIO); 134 if (ret < 0) 135 netif_dbg(pegasus, drv, pegasus->net, "%s failed with %d\n", __func__, ret); 136 137 return ret; 138 } 139 140 static int update_eth_regs_async(pegasus_t *pegasus) 141 { 142 int ret = -ENOMEM; 143 struct urb *async_urb; 144 struct usb_ctrlrequest *req; 145 146 req = kmalloc_obj(struct usb_ctrlrequest, GFP_ATOMIC); 147 if (req == NULL) 148 return ret; 149 150 async_urb = usb_alloc_urb(0, GFP_ATOMIC); 151 if (async_urb == NULL) { 152 kfree(req); 153 return ret; 154 } 155 req->bRequestType = PEGASUS_REQT_WRITE; 156 req->bRequest = PEGASUS_REQ_SET_REGS; 157 req->wValue = cpu_to_le16(0); 158 req->wIndex = cpu_to_le16(EthCtrl0); 159 req->wLength = cpu_to_le16(3); 160 161 usb_fill_control_urb(async_urb, pegasus->usb, 162 usb_sndctrlpipe(pegasus->usb, 0), (void *)req, 163 pegasus->eth_regs, 3, async_ctrl_callback, req); 164 165 ret = usb_submit_urb(async_urb, GFP_ATOMIC); 166 if (ret) { 167 if (ret == -ENODEV) 168 netif_device_detach(pegasus->net); 169 netif_err(pegasus, drv, pegasus->net, 170 "%s returned %d\n", __func__, ret); 171 usb_free_urb(async_urb); 172 kfree(req); 173 } 174 return ret; 175 } 176 177 static int __mii_op(pegasus_t *p, __u8 phy, __u8 indx, __u16 *regd, __u8 cmd) 178 { 179 int i, ret; 180 __le16 regdi; 181 __u8 data[4] = { phy, 0, 0, indx }; 182 183 if (cmd & PHY_WRITE) { 184 __le16 *t = (__le16 *) & data[1]; 185 *t = cpu_to_le16(*regd); 186 } 187 set_register(p, PhyCtrl, 0); 188 set_registers(p, PhyAddr, sizeof(data), data); 189 set_register(p, PhyCtrl, (indx | cmd)); 190 for (i = 0; i < REG_TIMEOUT; i++) { 191 ret = get_registers(p, PhyCtrl, 1, data); 192 if (ret < 0) 193 goto fail; 194 if (data[0] & PHY_DONE) 195 break; 196 } 197 if (i >= REG_TIMEOUT) { 198 ret = -ETIMEDOUT; 199 goto fail; 200 } 201 if (cmd & PHY_READ) { 202 ret = get_registers(p, PhyData, 2, ®di); 203 if (ret < 0) 204 goto fail; 205 *regd = le16_to_cpu(regdi); 206 } 207 return 0; 208 fail: 209 netif_dbg(p, drv, p->net, "%s failed\n", __func__); 210 return ret; 211 } 212 213 /* Returns non-negative int on success, error on failure */ 214 static int read_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 215 { 216 return __mii_op(pegasus, phy, indx, regd, PHY_READ); 217 } 218 219 /* Returns zero on success, error on failure */ 220 static int write_mii_word(pegasus_t *pegasus, __u8 phy, __u8 indx, __u16 *regd) 221 { 222 return __mii_op(pegasus, phy, indx, regd, PHY_WRITE); 223 } 224 225 static int mdio_read(struct net_device *dev, int phy_id, int loc) 226 { 227 pegasus_t *pegasus = netdev_priv(dev); 228 int ret; 229 u16 res; 230 231 ret = read_mii_word(pegasus, phy_id, loc, &res); 232 if (ret < 0) 233 return ret; 234 235 return (int)res; 236 } 237 238 static void mdio_write(struct net_device *dev, int phy_id, int loc, int val) 239 { 240 pegasus_t *pegasus = netdev_priv(dev); 241 u16 data = val; 242 243 write_mii_word(pegasus, phy_id, loc, &data); 244 } 245 246 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata) 247 { 248 int ret, i; 249 __le16 retdatai; 250 __u8 tmp = 0; 251 252 set_register(pegasus, EpromCtrl, 0); 253 set_register(pegasus, EpromOffset, index); 254 set_register(pegasus, EpromCtrl, EPROM_READ); 255 256 for (i = 0; i < REG_TIMEOUT; i++) { 257 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 258 if (ret < 0) 259 goto fail; 260 if (tmp & EPROM_DONE) 261 break; 262 } 263 if (i >= REG_TIMEOUT) { 264 ret = -ETIMEDOUT; 265 goto fail; 266 } 267 268 ret = get_registers(pegasus, EpromData, 2, &retdatai); 269 if (ret < 0) 270 goto fail; 271 *retdata = le16_to_cpu(retdatai); 272 return ret; 273 274 fail: 275 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 276 return ret; 277 } 278 279 #ifdef PEGASUS_WRITE_EEPROM 280 static inline void enable_eprom_write(pegasus_t *pegasus) 281 { 282 __u8 tmp; 283 284 get_registers(pegasus, EthCtrl2, 1, &tmp); 285 set_register(pegasus, EthCtrl2, tmp | EPROM_WR_ENABLE); 286 } 287 288 static inline void disable_eprom_write(pegasus_t *pegasus) 289 { 290 __u8 tmp; 291 292 get_registers(pegasus, EthCtrl2, 1, &tmp); 293 set_register(pegasus, EpromCtrl, 0); 294 set_register(pegasus, EthCtrl2, tmp & ~EPROM_WR_ENABLE); 295 } 296 297 static int write_eprom_word(pegasus_t *pegasus, __u8 index, __u16 data) 298 { 299 int i; 300 __u8 tmp, d[4] = { 0x3f, 0, 0, EPROM_WRITE }; 301 int ret; 302 __le16 le_data = cpu_to_le16(data); 303 304 set_registers(pegasus, EpromOffset, 4, d); 305 enable_eprom_write(pegasus); 306 set_register(pegasus, EpromOffset, index); 307 set_registers(pegasus, EpromData, 2, &le_data); 308 set_register(pegasus, EpromCtrl, EPROM_WRITE); 309 310 for (i = 0; i < REG_TIMEOUT; i++) { 311 ret = get_registers(pegasus, EpromCtrl, 1, &tmp); 312 if (ret == -ESHUTDOWN) 313 goto fail; 314 if (tmp & EPROM_DONE) 315 break; 316 } 317 disable_eprom_write(pegasus); 318 if (i >= REG_TIMEOUT) 319 goto fail; 320 321 return ret; 322 323 fail: 324 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 325 return -ETIMEDOUT; 326 } 327 #endif /* PEGASUS_WRITE_EEPROM */ 328 329 static inline int get_node_id(pegasus_t *pegasus, u8 *id) 330 { 331 int i, ret; 332 u16 w16; 333 334 for (i = 0; i < 3; i++) { 335 ret = read_eprom_word(pegasus, i, &w16); 336 if (ret < 0) 337 return ret; 338 ((__le16 *) id)[i] = cpu_to_le16(w16); 339 } 340 341 return 0; 342 } 343 344 static void set_ethernet_addr(pegasus_t *pegasus) 345 { 346 int ret; 347 u8 node_id[6]; 348 349 if (pegasus->features & PEGASUS_II) { 350 ret = get_registers(pegasus, 0x10, sizeof(node_id), node_id); 351 if (ret < 0) 352 goto err; 353 } else { 354 ret = get_node_id(pegasus, node_id); 355 if (ret < 0) 356 goto err; 357 ret = set_registers(pegasus, EthID, sizeof(node_id), node_id); 358 if (ret < 0) 359 goto err; 360 } 361 362 eth_hw_addr_set(pegasus->net, node_id); 363 364 return; 365 err: 366 eth_hw_addr_random(pegasus->net); 367 netif_dbg(pegasus, drv, pegasus->net, "software assigned MAC address.\n"); 368 369 return; 370 } 371 372 static inline int reset_mac(pegasus_t *pegasus) 373 { 374 int ret, i; 375 __u8 data = 0x8; 376 377 set_register(pegasus, EthCtrl1, data); 378 for (i = 0; i < REG_TIMEOUT; i++) { 379 ret = get_registers(pegasus, EthCtrl1, 1, &data); 380 if (ret < 0) 381 goto fail; 382 if (~data & 0x08) { 383 if (loopback) 384 break; 385 if (mii_mode && (pegasus->features & HAS_HOME_PNA)) 386 set_register(pegasus, Gpio1, 0x34); 387 else 388 set_register(pegasus, Gpio1, 0x26); 389 set_register(pegasus, Gpio0, pegasus->features); 390 set_register(pegasus, Gpio0, DEFAULT_GPIO_SET); 391 break; 392 } 393 } 394 if (i == REG_TIMEOUT) 395 return -ETIMEDOUT; 396 397 if (le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_LINKSYS || 398 le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_DLINK) { 399 set_register(pegasus, Gpio0, 0x24); 400 set_register(pegasus, Gpio0, 0x26); 401 } 402 if (le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_ELCON) { 403 __u16 auxmode; 404 ret = read_mii_word(pegasus, 3, 0x1b, &auxmode); 405 if (ret < 0) 406 goto fail; 407 auxmode |= 4; 408 write_mii_word(pegasus, 3, 0x1b, &auxmode); 409 } 410 411 return 0; 412 fail: 413 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 414 return ret; 415 } 416 417 static int enable_net_traffic(struct net_device *dev, struct usb_device *usb) 418 { 419 pegasus_t *pegasus = netdev_priv(dev); 420 int ret; 421 __u16 linkpart; 422 __u8 data[4]; 423 424 ret = read_mii_word(pegasus, pegasus->phy, MII_LPA, &linkpart); 425 if (ret < 0) 426 goto fail; 427 data[0] = 0xc8; /* TX & RX enable, append status, no CRC */ 428 data[1] = 0; 429 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_10FULL)) 430 data[1] |= 0x20; /* set full duplex */ 431 if (linkpart & (ADVERTISE_100FULL | ADVERTISE_100HALF)) 432 data[1] |= 0x10; /* set 100 Mbps */ 433 if (mii_mode) 434 data[1] = 0; 435 data[2] = loopback ? 0x09 : 0x01; 436 437 memcpy(pegasus->eth_regs, data, sizeof(data)); 438 ret = set_registers(pegasus, EthCtrl0, 3, data); 439 440 if (le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_LINKSYS || 441 le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_LINKSYS2 || 442 le16_to_cpu(pegasus->usb->descriptor.idVendor) == VENDOR_DLINK) { 443 u16 auxmode; 444 ret = read_mii_word(pegasus, 0, 0x1b, &auxmode); 445 if (ret < 0) 446 goto fail; 447 auxmode |= 4; 448 write_mii_word(pegasus, 0, 0x1b, &auxmode); 449 } 450 451 return ret; 452 fail: 453 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 454 return ret; 455 } 456 457 static void read_bulk_callback(struct urb *urb) 458 { 459 pegasus_t *pegasus = urb->context; 460 struct net_device *net; 461 u8 *buf = urb->transfer_buffer; 462 int rx_status, count = urb->actual_length; 463 int status = urb->status; 464 __u16 pkt_len; 465 466 if (!pegasus) 467 return; 468 469 net = pegasus->net; 470 if (!netif_device_present(net) || !netif_running(net)) 471 return; 472 473 switch (status) { 474 case 0: 475 break; 476 case -ETIME: 477 netif_dbg(pegasus, rx_err, net, "reset MAC\n"); 478 pegasus->flags &= ~PEGASUS_RX_BUSY; 479 break; 480 case -EPIPE: /* stall, or disconnect from TT */ 481 /* FIXME schedule work to clear the halt */ 482 netif_warn(pegasus, rx_err, net, "no rx stall recovery\n"); 483 return; 484 case -ENOENT: 485 case -ECONNRESET: 486 case -ESHUTDOWN: 487 netif_dbg(pegasus, ifdown, net, "rx unlink, %d\n", status); 488 return; 489 default: 490 netif_dbg(pegasus, rx_err, net, "RX status %d\n", status); 491 goto goon; 492 } 493 494 if (count < 4) 495 goto goon; 496 497 rx_status = buf[count - 2]; 498 if (rx_status & 0x1c) { 499 netif_dbg(pegasus, rx_err, net, 500 "RX packet error %x\n", rx_status); 501 net->stats.rx_errors++; 502 if (rx_status & 0x04) /* runt */ 503 net->stats.rx_length_errors++; 504 if (rx_status & 0x08) 505 net->stats.rx_crc_errors++; 506 if (rx_status & 0x10) /* extra bits */ 507 net->stats.rx_frame_errors++; 508 goto goon; 509 } 510 if (pegasus->chip == 0x8513) { 511 pkt_len = le32_to_cpu(*(__le32 *)urb->transfer_buffer); 512 pkt_len &= 0x0fff; 513 pegasus->rx_skb->data += 2; 514 } else { 515 pkt_len = buf[count - 3] << 8; 516 pkt_len += buf[count - 4]; 517 pkt_len &= 0xfff; 518 pkt_len -= 4; 519 } 520 521 /* 522 * If the packet is unreasonably long, quietly drop it rather than 523 * kernel panicing by calling skb_put. 524 */ 525 if (pkt_len > PEGASUS_MTU) 526 goto goon; 527 528 /* 529 * at this point we are sure pegasus->rx_skb != NULL 530 * so we go ahead and pass up the packet. 531 */ 532 skb_put(pegasus->rx_skb, pkt_len); 533 pegasus->rx_skb->protocol = eth_type_trans(pegasus->rx_skb, net); 534 netif_rx(pegasus->rx_skb); 535 net->stats.rx_packets++; 536 net->stats.rx_bytes += pkt_len; 537 538 if (pegasus->flags & PEGASUS_UNPLUG) 539 return; 540 541 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, PEGASUS_MTU, 542 GFP_ATOMIC); 543 544 if (pegasus->rx_skb == NULL) 545 goto tl_sched; 546 goon: 547 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 548 usb_rcvbulkpipe(pegasus->usb, PEGASUS_USB_EP_BULK_IN), 549 pegasus->rx_skb->data, PEGASUS_MTU, 550 read_bulk_callback, pegasus); 551 rx_status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 552 if (rx_status == -ENODEV) 553 netif_device_detach(pegasus->net); 554 else if (rx_status) { 555 pegasus->flags |= PEGASUS_RX_URB_FAIL; 556 goto tl_sched; 557 } else { 558 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 559 } 560 561 return; 562 563 tl_sched: 564 tasklet_schedule(&pegasus->rx_tl); 565 } 566 567 static void rx_fixup(struct tasklet_struct *t) 568 { 569 pegasus_t *pegasus = from_tasklet(pegasus, t, rx_tl); 570 int status; 571 572 if (pegasus->flags & PEGASUS_UNPLUG) 573 return; 574 575 if (pegasus->flags & PEGASUS_RX_URB_FAIL) 576 if (pegasus->rx_skb) 577 goto try_again; 578 if (pegasus->rx_skb == NULL) 579 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, 580 PEGASUS_MTU, 581 GFP_ATOMIC); 582 if (pegasus->rx_skb == NULL) { 583 netif_warn(pegasus, rx_err, pegasus->net, "low on memory\n"); 584 tasklet_schedule(&pegasus->rx_tl); 585 return; 586 } 587 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 588 usb_rcvbulkpipe(pegasus->usb, PEGASUS_USB_EP_BULK_IN), 589 pegasus->rx_skb->data, PEGASUS_MTU, 590 read_bulk_callback, pegasus); 591 try_again: 592 status = usb_submit_urb(pegasus->rx_urb, GFP_ATOMIC); 593 if (status == -ENODEV) 594 netif_device_detach(pegasus->net); 595 else if (status) { 596 pegasus->flags |= PEGASUS_RX_URB_FAIL; 597 tasklet_schedule(&pegasus->rx_tl); 598 } else { 599 pegasus->flags &= ~PEGASUS_RX_URB_FAIL; 600 } 601 } 602 603 static void write_bulk_callback(struct urb *urb) 604 { 605 pegasus_t *pegasus = urb->context; 606 struct net_device *net; 607 int status = urb->status; 608 609 if (!pegasus) 610 return; 611 612 net = pegasus->net; 613 614 if (!netif_device_present(net) || !netif_running(net)) 615 return; 616 617 switch (status) { 618 case -EPIPE: 619 /* FIXME schedule_work() to clear the tx halt */ 620 netif_stop_queue(net); 621 netif_warn(pegasus, tx_err, net, "no tx stall recovery\n"); 622 return; 623 case -ENOENT: 624 case -ECONNRESET: 625 case -ESHUTDOWN: 626 netif_dbg(pegasus, ifdown, net, "tx unlink, %d\n", status); 627 return; 628 default: 629 netif_info(pegasus, tx_err, net, "TX status %d\n", status); 630 fallthrough; 631 case 0: 632 break; 633 } 634 635 netif_trans_update(net); /* prevent tx timeout */ 636 netif_wake_queue(net); 637 } 638 639 static void intr_callback(struct urb *urb) 640 { 641 pegasus_t *pegasus = urb->context; 642 struct net_device *net; 643 int res, status = urb->status; 644 645 if (!pegasus) 646 return; 647 net = pegasus->net; 648 649 switch (status) { 650 case 0: 651 break; 652 case -ECONNRESET: /* unlink */ 653 case -ENOENT: 654 case -ESHUTDOWN: 655 return; 656 default: 657 /* some Pegasus-I products report LOTS of data 658 * toggle errors... avoid log spamming 659 */ 660 netif_dbg(pegasus, timer, net, "intr status %d\n", status); 661 } 662 663 if (urb->actual_length >= 6) { 664 u8 *d = urb->transfer_buffer; 665 666 /* byte 0 == tx_status1, reg 2B */ 667 if (d[0] & (TX_UNDERRUN|EXCESSIVE_COL 668 |LATE_COL|JABBER_TIMEOUT)) { 669 net->stats.tx_errors++; 670 if (d[0] & TX_UNDERRUN) 671 net->stats.tx_fifo_errors++; 672 if (d[0] & (EXCESSIVE_COL | JABBER_TIMEOUT)) 673 net->stats.tx_aborted_errors++; 674 if (d[0] & LATE_COL) 675 net->stats.tx_window_errors++; 676 } 677 678 /* d[5].LINK_STATUS lies on some adapters. 679 * d[0].NO_CARRIER kicks in only with failed TX. 680 * ... so monitoring with MII may be safest. 681 */ 682 683 /* bytes 3-4 == rx_lostpkt, reg 2E/2F */ 684 net->stats.rx_missed_errors += ((d[3] & 0x7f) << 8) | d[4]; 685 } 686 687 res = usb_submit_urb(urb, GFP_ATOMIC); 688 if (res == -ENODEV) 689 netif_device_detach(pegasus->net); 690 if (res) 691 netif_err(pegasus, timer, net, 692 "can't resubmit interrupt urb, %d\n", res); 693 } 694 695 static void pegasus_tx_timeout(struct net_device *net, unsigned int txqueue) 696 { 697 pegasus_t *pegasus = netdev_priv(net); 698 netif_warn(pegasus, timer, net, "tx timeout\n"); 699 usb_unlink_urb(pegasus->tx_urb); 700 net->stats.tx_errors++; 701 } 702 703 static netdev_tx_t pegasus_start_xmit(struct sk_buff *skb, 704 struct net_device *net) 705 { 706 pegasus_t *pegasus = netdev_priv(net); 707 int count = ((skb->len + 2) & 0x3f) ? skb->len + 2 : skb->len + 3; 708 int res; 709 __u16 l16 = skb->len; 710 711 netif_stop_queue(net); 712 713 ((__le16 *) pegasus->tx_buff)[0] = cpu_to_le16(l16); 714 skb_copy_from_linear_data(skb, pegasus->tx_buff + 2, skb->len); 715 usb_fill_bulk_urb(pegasus->tx_urb, pegasus->usb, 716 usb_sndbulkpipe(pegasus->usb, PEGASUS_USB_EP_BULK_OUT), 717 pegasus->tx_buff, count, 718 write_bulk_callback, pegasus); 719 if ((res = usb_submit_urb(pegasus->tx_urb, GFP_ATOMIC))) { 720 netif_warn(pegasus, tx_err, net, "fail tx, %d\n", res); 721 switch (res) { 722 case -EPIPE: /* stall, or disconnect from TT */ 723 /* cleanup should already have been scheduled */ 724 break; 725 case -ENODEV: /* disconnect() upcoming */ 726 case -EPERM: 727 netif_device_detach(pegasus->net); 728 break; 729 default: 730 net->stats.tx_errors++; 731 netif_start_queue(net); 732 } 733 } else { 734 net->stats.tx_packets++; 735 net->stats.tx_bytes += skb->len; 736 } 737 dev_kfree_skb(skb); 738 739 return NETDEV_TX_OK; 740 } 741 742 static inline void disable_net_traffic(pegasus_t *pegasus) 743 { 744 __le16 tmp = cpu_to_le16(0); 745 746 set_registers(pegasus, EthCtrl0, sizeof(tmp), &tmp); 747 } 748 749 static inline int get_interrupt_interval(pegasus_t *pegasus) 750 { 751 u16 data; 752 u8 interval; 753 int ret; 754 755 ret = read_eprom_word(pegasus, 4, &data); 756 if (ret < 0) 757 return ret; 758 759 interval = data >> 8; 760 if (pegasus->usb->speed != USB_SPEED_HIGH) { 761 if (interval < 0x80) { 762 netif_info(pegasus, timer, pegasus->net, 763 "intr interval changed from %ums to %ums\n", 764 interval, 0x80); 765 interval = 0x80; 766 data = (data & 0x00FF) | ((u16)interval << 8); 767 #ifdef PEGASUS_WRITE_EEPROM 768 write_eprom_word(pegasus, 4, data); 769 #endif 770 } 771 } 772 pegasus->intr_interval = interval; 773 774 return 0; 775 } 776 777 static void set_carrier(struct net_device *net) 778 { 779 pegasus_t *pegasus = netdev_priv(net); 780 u16 tmp; 781 782 if (read_mii_word(pegasus, pegasus->phy, MII_BMSR, &tmp)) 783 return; 784 785 if (tmp & BMSR_LSTATUS) 786 netif_carrier_on(net); 787 else 788 netif_carrier_off(net); 789 } 790 791 static void free_all_urbs(pegasus_t *pegasus) 792 { 793 usb_free_urb(pegasus->intr_urb); 794 usb_free_urb(pegasus->tx_urb); 795 usb_free_urb(pegasus->rx_urb); 796 } 797 798 static void unlink_all_urbs(pegasus_t *pegasus) 799 { 800 usb_kill_urb(pegasus->intr_urb); 801 usb_kill_urb(pegasus->tx_urb); 802 usb_kill_urb(pegasus->rx_urb); 803 } 804 805 static int alloc_urbs(pegasus_t *pegasus) 806 { 807 static const u8 bulk_ep_addr[] = { 808 1 | USB_DIR_IN, 809 2 | USB_DIR_OUT, 810 0}; 811 static const u8 int_ep_addr[] = { 812 3 | USB_DIR_IN, 813 0}; 814 int res = -ENOMEM; 815 816 if (!usb_check_bulk_endpoints(pegasus->intf, bulk_ep_addr) || 817 !usb_check_int_endpoints(pegasus->intf, int_ep_addr)) 818 return -ENODEV; 819 820 pegasus->rx_urb = usb_alloc_urb(0, GFP_KERNEL); 821 if (!pegasus->rx_urb) { 822 return res; 823 } 824 pegasus->tx_urb = usb_alloc_urb(0, GFP_KERNEL); 825 if (!pegasus->tx_urb) { 826 usb_free_urb(pegasus->rx_urb); 827 return res; 828 } 829 pegasus->intr_urb = usb_alloc_urb(0, GFP_KERNEL); 830 if (!pegasus->intr_urb) { 831 usb_free_urb(pegasus->tx_urb); 832 usb_free_urb(pegasus->rx_urb); 833 return res; 834 } 835 836 return 0; 837 } 838 839 static int pegasus_open(struct net_device *net) 840 { 841 pegasus_t *pegasus = netdev_priv(net); 842 int res=-ENOMEM; 843 844 if (pegasus->rx_skb == NULL) 845 pegasus->rx_skb = __netdev_alloc_skb_ip_align(pegasus->net, 846 PEGASUS_MTU, 847 GFP_KERNEL); 848 if (!pegasus->rx_skb) 849 goto exit; 850 851 set_registers(pegasus, EthID, 6, net->dev_addr); 852 853 usb_fill_bulk_urb(pegasus->rx_urb, pegasus->usb, 854 usb_rcvbulkpipe(pegasus->usb, PEGASUS_USB_EP_BULK_IN), 855 pegasus->rx_skb->data, PEGASUS_MTU, 856 read_bulk_callback, pegasus); 857 if ((res = usb_submit_urb(pegasus->rx_urb, GFP_KERNEL))) { 858 if (res == -ENODEV) 859 netif_device_detach(pegasus->net); 860 netif_dbg(pegasus, ifup, net, "failed rx_urb, %d\n", res); 861 goto exit; 862 } 863 864 usb_fill_int_urb(pegasus->intr_urb, pegasus->usb, 865 usb_rcvintpipe(pegasus->usb, PEGASUS_USB_EP_INT_IN), 866 pegasus->intr_buff, sizeof(pegasus->intr_buff), 867 intr_callback, pegasus, pegasus->intr_interval); 868 if ((res = usb_submit_urb(pegasus->intr_urb, GFP_KERNEL))) { 869 if (res == -ENODEV) 870 netif_device_detach(pegasus->net); 871 netif_dbg(pegasus, ifup, net, "failed intr_urb, %d\n", res); 872 usb_kill_urb(pegasus->rx_urb); 873 goto exit; 874 } 875 res = enable_net_traffic(net, pegasus->usb); 876 if (res < 0) { 877 netif_dbg(pegasus, ifup, net, 878 "can't enable_net_traffic() - %d\n", res); 879 res = -EIO; 880 usb_kill_urb(pegasus->rx_urb); 881 usb_kill_urb(pegasus->intr_urb); 882 goto exit; 883 } 884 set_carrier(net); 885 netif_start_queue(net); 886 netif_dbg(pegasus, ifup, net, "open\n"); 887 res = 0; 888 exit: 889 return res; 890 } 891 892 static int pegasus_close(struct net_device *net) 893 { 894 pegasus_t *pegasus = netdev_priv(net); 895 896 netif_stop_queue(net); 897 if (!(pegasus->flags & PEGASUS_UNPLUG)) 898 disable_net_traffic(pegasus); 899 tasklet_kill(&pegasus->rx_tl); 900 unlink_all_urbs(pegasus); 901 902 return 0; 903 } 904 905 static void pegasus_get_drvinfo(struct net_device *dev, 906 struct ethtool_drvinfo *info) 907 { 908 pegasus_t *pegasus = netdev_priv(dev); 909 910 strscpy(info->driver, driver_name, sizeof(info->driver)); 911 usb_make_path(pegasus->usb, info->bus_info, sizeof(info->bus_info)); 912 } 913 914 /* also handles three patterns of some kind in hardware */ 915 #define WOL_SUPPORTED (WAKE_MAGIC|WAKE_PHY) 916 917 static void 918 pegasus_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 919 { 920 pegasus_t *pegasus = netdev_priv(dev); 921 922 wol->supported = WAKE_MAGIC | WAKE_PHY; 923 wol->wolopts = pegasus->wolopts; 924 } 925 926 static int 927 pegasus_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) 928 { 929 pegasus_t *pegasus = netdev_priv(dev); 930 u8 reg78 = 0x04; 931 int ret; 932 933 if (wol->wolopts & ~WOL_SUPPORTED) 934 return -EINVAL; 935 936 if (wol->wolopts & WAKE_MAGIC) 937 reg78 |= 0x80; 938 if (wol->wolopts & WAKE_PHY) 939 reg78 |= 0x40; 940 /* FIXME this 0x10 bit still needs to get set in the chip... */ 941 if (wol->wolopts) 942 pegasus->eth_regs[0] |= 0x10; 943 else 944 pegasus->eth_regs[0] &= ~0x10; 945 pegasus->wolopts = wol->wolopts; 946 947 ret = set_register(pegasus, WakeupControl, reg78); 948 if (!ret) 949 ret = device_set_wakeup_enable(&pegasus->usb->dev, 950 wol->wolopts); 951 return ret; 952 } 953 954 static inline void pegasus_reset_wol(struct net_device *dev) 955 { 956 struct ethtool_wolinfo wol; 957 958 memset(&wol, 0, sizeof wol); 959 (void) pegasus_set_wol(dev, &wol); 960 } 961 962 static int 963 pegasus_get_link_ksettings(struct net_device *dev, 964 struct ethtool_link_ksettings *ecmd) 965 { 966 pegasus_t *pegasus; 967 968 pegasus = netdev_priv(dev); 969 mii_ethtool_get_link_ksettings(&pegasus->mii, ecmd); 970 return 0; 971 } 972 973 static int 974 pegasus_set_link_ksettings(struct net_device *dev, 975 const struct ethtool_link_ksettings *ecmd) 976 { 977 pegasus_t *pegasus = netdev_priv(dev); 978 return mii_ethtool_set_link_ksettings(&pegasus->mii, ecmd); 979 } 980 981 static int pegasus_nway_reset(struct net_device *dev) 982 { 983 pegasus_t *pegasus = netdev_priv(dev); 984 return mii_nway_restart(&pegasus->mii); 985 } 986 987 static u32 pegasus_get_link(struct net_device *dev) 988 { 989 pegasus_t *pegasus = netdev_priv(dev); 990 return mii_link_ok(&pegasus->mii); 991 } 992 993 static u32 pegasus_get_msglevel(struct net_device *dev) 994 { 995 pegasus_t *pegasus = netdev_priv(dev); 996 return pegasus->msg_enable; 997 } 998 999 static void pegasus_set_msglevel(struct net_device *dev, u32 v) 1000 { 1001 pegasus_t *pegasus = netdev_priv(dev); 1002 pegasus->msg_enable = v; 1003 } 1004 1005 static const struct ethtool_ops ops = { 1006 .get_drvinfo = pegasus_get_drvinfo, 1007 .nway_reset = pegasus_nway_reset, 1008 .get_link = pegasus_get_link, 1009 .get_msglevel = pegasus_get_msglevel, 1010 .set_msglevel = pegasus_set_msglevel, 1011 .get_wol = pegasus_get_wol, 1012 .set_wol = pegasus_set_wol, 1013 .get_link_ksettings = pegasus_get_link_ksettings, 1014 .set_link_ksettings = pegasus_set_link_ksettings, 1015 }; 1016 1017 static int pegasus_siocdevprivate(struct net_device *net, struct ifreq *rq, 1018 void __user *udata, int cmd) 1019 { 1020 __u16 *data = (__u16 *) &rq->ifr_ifru; 1021 pegasus_t *pegasus = netdev_priv(net); 1022 int res; 1023 1024 switch (cmd) { 1025 case SIOCDEVPRIVATE: 1026 data[0] = pegasus->phy; 1027 fallthrough; 1028 case SIOCDEVPRIVATE + 1: 1029 res = read_mii_word(pegasus, data[0], data[1] & 0x1f, &data[3]); 1030 break; 1031 case SIOCDEVPRIVATE + 2: 1032 if (!capable(CAP_NET_ADMIN)) 1033 return -EPERM; 1034 write_mii_word(pegasus, pegasus->phy, data[1] & 0x1f, &data[2]); 1035 res = 0; 1036 break; 1037 default: 1038 res = -EOPNOTSUPP; 1039 } 1040 return res; 1041 } 1042 1043 static void pegasus_set_multicast(struct net_device *net) 1044 { 1045 pegasus_t *pegasus = netdev_priv(net); 1046 1047 if (net->flags & IFF_PROMISC) { 1048 pegasus->eth_regs[EthCtrl2] |= RX_PROMISCUOUS; 1049 netif_info(pegasus, link, net, "Promiscuous mode enabled\n"); 1050 } else if (!netdev_mc_empty(net) || (net->flags & IFF_ALLMULTI)) { 1051 pegasus->eth_regs[EthCtrl0] |= RX_MULTICAST; 1052 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1053 netif_dbg(pegasus, link, net, "set allmulti\n"); 1054 } else { 1055 pegasus->eth_regs[EthCtrl0] &= ~RX_MULTICAST; 1056 pegasus->eth_regs[EthCtrl2] &= ~RX_PROMISCUOUS; 1057 } 1058 update_eth_regs_async(pegasus); 1059 } 1060 1061 static __u8 mii_phy_probe(pegasus_t *pegasus) 1062 { 1063 int i, ret; 1064 __u16 tmp; 1065 1066 for (i = 0; i < 32; i++) { 1067 ret = read_mii_word(pegasus, i, MII_BMSR, &tmp); 1068 if (ret < 0) 1069 goto fail; 1070 if (tmp == 0 || tmp == 0xffff || (tmp & BMSR_MEDIA) == 0) 1071 continue; 1072 else 1073 return i; 1074 } 1075 fail: 1076 return 0xff; 1077 } 1078 1079 static inline void setup_pegasus_II(pegasus_t *pegasus) 1080 { 1081 int ret; 1082 __u8 data = 0xa5; 1083 1084 set_register(pegasus, Reg1d, 0); 1085 set_register(pegasus, Reg7b, 1); 1086 msleep(100); 1087 if ((pegasus->features & HAS_HOME_PNA) && mii_mode) 1088 set_register(pegasus, Reg7b, 0); 1089 else 1090 set_register(pegasus, Reg7b, 2); 1091 1092 set_register(pegasus, 0x83, data); 1093 ret = get_registers(pegasus, 0x83, 1, &data); 1094 if (ret < 0) 1095 goto fail; 1096 1097 if (data == 0xa5) 1098 pegasus->chip = 0x8513; 1099 else 1100 pegasus->chip = 0; 1101 1102 set_register(pegasus, 0x80, 0xc0); 1103 set_register(pegasus, 0x83, 0xff); 1104 set_register(pegasus, 0x84, 0x01); 1105 1106 if (pegasus->features & HAS_HOME_PNA && mii_mode) 1107 set_register(pegasus, Reg81, 6); 1108 else 1109 set_register(pegasus, Reg81, 2); 1110 1111 return; 1112 fail: 1113 netif_dbg(pegasus, drv, pegasus->net, "%s failed\n", __func__); 1114 } 1115 1116 static void check_carrier(struct work_struct *work) 1117 { 1118 pegasus_t *pegasus = container_of(work, pegasus_t, carrier_check.work); 1119 set_carrier(pegasus->net); 1120 if (!(pegasus->flags & PEGASUS_UNPLUG)) { 1121 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1122 CARRIER_CHECK_DELAY); 1123 } 1124 } 1125 1126 static int pegasus_blacklisted(struct usb_device *udev) 1127 { 1128 struct usb_device_descriptor *udd = &udev->descriptor; 1129 1130 /* Special quirk to keep the driver from handling the Belkin Bluetooth 1131 * dongle which happens to have the same ID. 1132 */ 1133 if ((udd->idVendor == cpu_to_le16(VENDOR_BELKIN)) && 1134 (udd->idProduct == cpu_to_le16(0x0121)) && 1135 (udd->bDeviceClass == USB_CLASS_WIRELESS_CONTROLLER) && 1136 (udd->bDeviceProtocol == 1)) 1137 return 1; 1138 1139 return 0; 1140 } 1141 1142 static int pegasus_probe(struct usb_interface *intf, 1143 const struct usb_device_id *id) 1144 { 1145 struct usb_device *dev = interface_to_usbdev(intf); 1146 struct net_device *net; 1147 pegasus_t *pegasus; 1148 const struct usb_eth_dev *info = (const struct usb_eth_dev *)id->driver_info; 1149 int res = -ENOMEM; 1150 static const u8 bulk_ep_addr[] = { 1151 PEGASUS_USB_EP_BULK_IN | USB_DIR_IN, 1152 PEGASUS_USB_EP_BULK_OUT | USB_DIR_OUT, 1153 0}; 1154 static const u8 int_ep_addr[] = { 1155 PEGASUS_USB_EP_INT_IN | USB_DIR_IN, 1156 0}; 1157 1158 if (pegasus_blacklisted(dev)) 1159 return -ENODEV; 1160 1161 /* Verify that all required endpoints are present */ 1162 if (!usb_check_bulk_endpoints(intf, bulk_ep_addr) || 1163 !usb_check_int_endpoints(intf, int_ep_addr)) { 1164 dev_err(&intf->dev, "Missing or invalid endpoints\n"); 1165 return -ENODEV; 1166 } 1167 1168 net = alloc_etherdev(sizeof(struct pegasus)); 1169 if (!net) 1170 goto out; 1171 1172 pegasus = netdev_priv(net); 1173 pegasus->intf = intf; 1174 1175 res = alloc_urbs(pegasus); 1176 if (res < 0) { 1177 dev_err(&intf->dev, "can't allocate %s\n", "urbs"); 1178 goto out1; 1179 } 1180 1181 tasklet_setup(&pegasus->rx_tl, rx_fixup); 1182 1183 INIT_DELAYED_WORK(&pegasus->carrier_check, check_carrier); 1184 1185 pegasus->usb = dev; 1186 pegasus->net = net; 1187 1188 1189 net->watchdog_timeo = PEGASUS_TX_TIMEOUT; 1190 net->netdev_ops = &pegasus_netdev_ops; 1191 net->ethtool_ops = &ops; 1192 pegasus->mii.dev = net; 1193 pegasus->mii.mdio_read = mdio_read; 1194 pegasus->mii.mdio_write = mdio_write; 1195 pegasus->mii.phy_id_mask = 0x1f; 1196 pegasus->mii.reg_num_mask = 0x1f; 1197 pegasus->msg_enable = netif_msg_init(msg_level, NETIF_MSG_DRV 1198 | NETIF_MSG_PROBE | NETIF_MSG_LINK); 1199 1200 pegasus->features = info ? info->private : DEFAULT_GPIO_RESET; 1201 res = get_interrupt_interval(pegasus); 1202 if (res) 1203 goto out2; 1204 if (reset_mac(pegasus)) { 1205 dev_err(&intf->dev, "can't reset MAC\n"); 1206 res = -EIO; 1207 goto out2; 1208 } 1209 set_ethernet_addr(pegasus); 1210 if (pegasus->features & PEGASUS_II) { 1211 dev_info(&intf->dev, "setup Pegasus II specific registers\n"); 1212 setup_pegasus_II(pegasus); 1213 } 1214 pegasus->phy = mii_phy_probe(pegasus); 1215 if (pegasus->phy == 0xff) { 1216 dev_warn(&intf->dev, "can't locate MII phy, using default\n"); 1217 pegasus->phy = 1; 1218 } 1219 pegasus->mii.phy_id = pegasus->phy; 1220 usb_set_intfdata(intf, pegasus); 1221 SET_NETDEV_DEV(net, &intf->dev); 1222 pegasus_reset_wol(net); 1223 res = register_netdev(net); 1224 if (res) 1225 goto out3; 1226 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1227 CARRIER_CHECK_DELAY); 1228 dev_info(&intf->dev, "%s, %s, %pM\n", net->name, 1229 info ? info->name : "(unknown)", net->dev_addr); 1230 return 0; 1231 1232 out3: 1233 usb_set_intfdata(intf, NULL); 1234 out2: 1235 free_all_urbs(pegasus); 1236 out1: 1237 free_netdev(net); 1238 out: 1239 return res; 1240 } 1241 1242 static void pegasus_disconnect(struct usb_interface *intf) 1243 { 1244 struct pegasus *pegasus = usb_get_intfdata(intf); 1245 1246 usb_set_intfdata(intf, NULL); 1247 if (!pegasus) { 1248 dev_dbg(&intf->dev, "unregistering non-bound device?\n"); 1249 return; 1250 } 1251 1252 pegasus->flags |= PEGASUS_UNPLUG; 1253 cancel_delayed_work_sync(&pegasus->carrier_check); 1254 unregister_netdev(pegasus->net); 1255 unlink_all_urbs(pegasus); 1256 free_all_urbs(pegasus); 1257 if (pegasus->rx_skb != NULL) { 1258 dev_kfree_skb(pegasus->rx_skb); 1259 pegasus->rx_skb = NULL; 1260 } 1261 free_netdev(pegasus->net); 1262 } 1263 1264 static int pegasus_suspend(struct usb_interface *intf, pm_message_t message) 1265 { 1266 struct pegasus *pegasus = usb_get_intfdata(intf); 1267 1268 netif_device_detach(pegasus->net); 1269 cancel_delayed_work_sync(&pegasus->carrier_check); 1270 if (netif_running(pegasus->net)) { 1271 usb_kill_urb(pegasus->rx_urb); 1272 usb_kill_urb(pegasus->intr_urb); 1273 } 1274 return 0; 1275 } 1276 1277 static int pegasus_resume(struct usb_interface *intf) 1278 { 1279 struct pegasus *pegasus = usb_get_intfdata(intf); 1280 1281 netif_device_attach(pegasus->net); 1282 if (netif_running(pegasus->net)) { 1283 pegasus->rx_urb->status = 0; 1284 pegasus->rx_urb->actual_length = 0; 1285 read_bulk_callback(pegasus->rx_urb); 1286 1287 pegasus->intr_urb->status = 0; 1288 pegasus->intr_urb->actual_length = 0; 1289 intr_callback(pegasus->intr_urb); 1290 } 1291 queue_delayed_work(system_long_wq, &pegasus->carrier_check, 1292 CARRIER_CHECK_DELAY); 1293 return 0; 1294 } 1295 1296 static const struct net_device_ops pegasus_netdev_ops = { 1297 .ndo_open = pegasus_open, 1298 .ndo_stop = pegasus_close, 1299 .ndo_siocdevprivate = pegasus_siocdevprivate, 1300 .ndo_start_xmit = pegasus_start_xmit, 1301 .ndo_set_rx_mode = pegasus_set_multicast, 1302 .ndo_tx_timeout = pegasus_tx_timeout, 1303 .ndo_set_mac_address = eth_mac_addr, 1304 .ndo_validate_addr = eth_validate_addr, 1305 }; 1306 1307 static struct usb_driver pegasus_driver = { 1308 .name = driver_name, 1309 .probe = pegasus_probe, 1310 .disconnect = pegasus_disconnect, 1311 .id_table = pegasus_ids, 1312 .suspend = pegasus_suspend, 1313 .resume = pegasus_resume, 1314 .disable_hub_initiated_lpm = 1, 1315 }; 1316 1317 static void __init parse_id(char *id) 1318 { 1319 unsigned int vendor_id = 0, device_id = 0, flags = 0; 1320 char *token, *name = NULL; 1321 int dyn_id_index = ARRAY_SIZE(pegasus_ids) - 2; 1322 1323 token = strsep(&id, ":"); 1324 if (token) 1325 name = token; 1326 /* name now points to a null terminated string*/ 1327 token = strsep(&id, ":"); 1328 if (token && kstrtouint(token, 16, &vendor_id)) 1329 return; 1330 token = strsep(&id, ":"); 1331 if (token && kstrtouint(token, 16, &device_id)) 1332 return; 1333 if (id && *id && kstrtouint(id, 16, &flags)) 1334 return; 1335 pr_info("%s: new device %s, vendor ID 0x%04x, device ID 0x%04x, flags: 0x%x\n", 1336 driver_name, name, vendor_id, device_id, flags); 1337 1338 if (vendor_id > 0x10000 || vendor_id == 0) 1339 return; 1340 if (device_id > 0x10000 || device_id == 0) 1341 return; 1342 1343 dynamic_id_info.name = name; 1344 dynamic_id_info.private = flags; 1345 pegasus_ids[dyn_id_index].match_flags = USB_DEVICE_ID_MATCH_DEVICE; 1346 pegasus_ids[dyn_id_index].idVendor = vendor_id; 1347 pegasus_ids[dyn_id_index].idProduct = device_id; 1348 pegasus_ids[dyn_id_index].driver_info = (kernel_ulong_t)&dynamic_id_info; 1349 } 1350 1351 static int __init pegasus_init(void) 1352 { 1353 pr_info("%s: " DRIVER_DESC "\n", driver_name); 1354 if (devid) 1355 parse_id(devid); 1356 return usb_register(&pegasus_driver); 1357 } 1358 1359 static void __exit pegasus_exit(void) 1360 { 1361 usb_deregister(&pegasus_driver); 1362 } 1363 1364 module_init(pegasus_init); 1365 module_exit(pegasus_exit); 1366